Blast apparatus for downdraft-furnaces.



No.718,453. PATENTED JAN. 13, 1903. R.W. HAMANN.

BLAST APPARATUS. POR DOWNDJRAFT'FURNAGES.

APPLICATION FILED sBPT.`z, 1902. No MODEL. v I s SHEETS-SHEET 1.

Trl: nun'ms mms w.. PoYo-umn., WASHINGTON. D, a.

No. 718,453. PATBNTED JAN. 13, 1903.

R. W. HAMANN. BLAST APPARATUS FOR DOWNDRAFT FURNAGBS.

APPLICATION FILED SEPT. 2, 1902.

NO MODEL.

3 SHEETS-SHEET 2.

MMM l @g/WMPMWW .110. 718,453.v PATENTBD JAN.13,1903.

R. W. HAMANN.,

BLAST APPARATUS FOR DOWNDRAFT FURNACES. APPLICATION FILED sEPT. z, 1902.

N0 MODEL.

3 SHEETS-SHEET 3.

Nrrnn STATES ATENT OFFICE.

RICHARD W. I'IAMANN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO EUGENE J. FEINER, OF ST. LOUIS, MISSOURI.

BLAST APPARATUS FOR DOWNDRAFT-FURNACES.

SPECIFICATIO-formngpart of Letters Patent No. 718,453, dated January 13, 1903.

Application iiled September 2, 1902. Serial No. 121,761l (No model .i

To will whom it may concern:

`Be it known thatLRIoHARD W. HAMANN, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Blast Apparatus for DoWndraft-Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to a blast apparatus for downdraft-furnaces; and it consists of the novel construction, combination, and arrangement of parts Ahereinafter shown, described, and claimed.

Figure 1 is a vertical longitudinal section of a downdraft-boiler. Fig. 2 is` a front elevation of the blast apparatus. Fig. 3 is a View showing the automatic cut-off. Fig. 4 is an elevation ofthe blast apparatus with parts removed, showing the steam-turbine. Fig. 5 is a perspective view of a casting which I employ in carrying out my invention. Fig. Gis a perspective view of a defiector which I employ in-carrying out my invention.

Myinvention is in the nature of an improvement on Letters Patent granted to me December 3, 1901, No. 688,171, on smoke-consumers, and especially designed to be used in connection with a downdraft-furnace, and especially constructed for such use. The use of this invention with a downdraft-furnace I iind by experience adds considerably to the efficiency of such a furnace, and on account of the draft apparatus being located in the usual door-opening of a downdraft-furnace the heat which has heretofore emanated from such opening has been eliminated without affecting but adding to the efficiency of such furnace.

My draft apparatus, which Will be described in detail hereinafter, is located inthe usual door-opening of the downdraft-furnace.

Referring to the drawings, 1 indicates the usual furnace-door opening of a downdraftfurnace, and over or in this opening I locate or attach my improved draft apparatus.

2 indicates a casting which is provided withV a ange 3 and a groove 4 anda steam-port 5, and located in said steam-port 5 is one end of a steam-pipe 6. Located in said casting 2, at

a point directly beneath the location of the steam-inlet pipe 6, is a steam-outlet pipe 7.

8 indicates a plate or diaphragm, which is snugly fitted and located in the groove 4, thus creating, in connection With the casting 2, a chamber 9. Located in said chamber 9 is a steam-turbine 10, provided with cups 11, against which the steam entering the port 5 comes in contact by rotating the same. The steam-turbine 10 is mounted on a shaft 12. Located in the casting 2 is abushing or housing 13, provided with a peripheral flange 14, such bushing or housing 13 being readily mounted in the casting 2, said shaft 12 being located' in the bushing or housing.

Mounted on the housing or bushing 13 is a'metal cup 15, and secured to said metal Y producing a blast, which blast or inward4 current of air passes in through the opening 17 and into the furnace through the opening in the deflector 18, which is provided with a rectangular opening 19. Said deector 18 is located in the groove 4 of the casting 2 and is provided with a right-angular wall 20 and an inwardly-inclined Wall 21. This deector answers two purposes. By its being applied to the casting 2 anniform size of blast apparatus may be made to fit various sizes of door-openings of downdraft-furnaces, and then, again, the inclined wall 21 of such defiector deflects the airgenerated by the blast upwardly, or, in other words, elevates the saine, so as to keep it from coming in contact with'the cold.

-In operation the steam is admitted to the steam-inlet pipe 6 in the steam-port 5 and impinges on 'passing from said port on the buckets 11 of the steam-turbine, thus rotating the same, and bythe operation of the steam-turbine the fan 16 is rotated, thus creating a current of air which passes through the opening 17 and into the furnace through the opening 19 of the deector 18.

While I have shown in the drawings and described in the specication my invention as applied to a downdraft-furnace, I desire to state and emphasize that my invention can be equally as well applied and used IOO be actuated by said steam-turbine, and a deleot'ol 18 mounted in said groove 4, said deeotoi' consisting of a right-angular Wall 20, and an upwardly-inclined wall, substantially as specified.

In testimony whereof I alx my signature in presence of two Witnesses.

RICHARD W. HAMANN.

Witnesses:

ALFRED A. EIoKs, M. G. IRIoN. 

